[teilo]

Textmate 2 did exactly what Blender did. Went open source, has a healthy developer community, and has had steady updates for a couple of years. They still call it "Alpha" but it is very stable and I use it every day.

[tosh]

Wow, I somehow missed (or forgot?) that TextMate 2 got open sourced. Here is the Github repo: https://github.com/textmate/textmate

[psychometry]

True, but before Textmate was open-sourced, there was a long period of frustration due to lack of progress and communication from the developer.

[coldtea]

Yes, but Textmate 2, after all this time, has less options and is slower than ST2, much less ST3.